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NI PXIe-5694 Calibration Procedure
9.
Connect power sensor B to the digitizer cable. Use a 3.5 mm (f)-to-3.5 mm (f) adapter.
Figure 4.
Power Meter-to-Digitizer Cable Connection
10. Reset RF source 1 to one of the frequencies listed in the
Frequency
column in Table 5.
11. Measure the channel B power using the appropriate sensor calibration factor for the
frequency. Use the following equation to calculate and record the
Digitizer Cable Loss
for
the frequency in Table 5.
Digitizer Cable Loss
=
Reference Source Measurement
-
Channel B Power
where
Reference Source Measurement
is the corresponding measurement
recorded in Table 5 for the frequency.
12. Repeat steps 10 and 11 for each frequency listed in Table 5.
13. Disconnect the digitizer cable and power sensor from the RF source 1 output.
14. Connect the RF source 1 output to the power splitter input. Use a 3.5 mm (m)-to-3.5 mm (m)
RF source cable.
15. Connect the power splitter reference output to power sensor A.
1
Power Meter
2
RF Source 1
3
Power Sensor B
4
Digitizer Cable
1
4
2
3
